Preheat your oven to 180C/350F. This is essential to ensure that your cookies bake evenly and become perfectly golden.
Line a large baking sheet with parchment paper and set it aside. This will prevent the cookies from sticking and make cleanup a breeze.
In a large mixing bowl, combine cashew butter, egg, allulose, and baking soda. Mix well until everything is fully incorporated; the mixture should be smooth and creamy.
Using a rubber spatula, gently fold in the sugar-free candy buttons. Be careful not to overmix; you want the candy to remain intact for that fun texture.
Cover the mixing bowl with plastic wrap and refrigerate the dough for 30 minutes. This helps the flavors meld and makes the dough easier to work with.
After refrigerating, remove the bowl from the fridge. With clean hands, form 12 balls of dough. The dough should be slightly sticky but manageable.
Place the dough balls on the lined baking sheet about 1 to 2 inches apart. This spacing ensures that the cookies have room to spread while baking.
Bake in the preheated oven for 10 to 12 minutes or until the edges just begin to turn golden. Keep an eye on them; they can go from perfect to overbaked quickly!
Once baked, remove the cookies from the oven and let them cool completely on the baking sheet. This step is crucial for achieving the right texture.